All Flashcards
What are the differences between power and energy?
Power: The rate of energy use. | Energy: The total amount of work done or energy transferred.
What are the differences between series and parallel circuits (regarding total resistance)?
Series: Total resistance is the sum of individual resistances. | Parallel: Total resistance is less than the smallest individual resistance.
What are the differences between series and parallel circuits (regarding current)?
Series: Current is the same through all components. | Parallel: Current divides among the branches.
What are the differences between series and parallel circuits (regarding voltage)?
Series: Voltage divides among the components. | Parallel: Voltage is the same across all branches.
Compare and contrast a 40W bulb and a 100W bulb.
40W bulb: Uses less power, dimmer. | 100W bulb: Uses more power, brighter.
What is the difference between Power and Energy?
Power: The rate at which energy is used or transferred. | Energy: The capacity to do work.
Compare a 40W bulb and a 100W bulb in terms of brightness.
40W Bulb: Less bright, consumes less power. | 100W Bulb: Brighter, consumes more power.
What is the effect of increasing the current (I) through a resistor?
Increases the power dissipated by the resistor (P = I^2 * R).
What happens to the power dissipated if the voltage (ΔV) across a resistor increases?
The power dissipated increases (P = (ΔV)^2 / R).
What happens when a resistor is added in parallel to an existing resistor in a circuit?
The total resistance decreases, and the total current in the circuit increases.
What is the effect of increasing resistance in a circuit with constant voltage?
It decreases the current flowing through the circuit and reduces the power dissipated.
What is the effect of increasing the voltage across a light bulb?
The light bulb will shine brighter because it dissipates more power.